Great at what it does, although I'll be honest, it can use a tad bit more visual refinement on the UI/UX side. Some display options are prone to minor issues depending on scales/options set (not all of them display in a clean and organized way) but it's functionally sound for the most part. Apart from that, an excellent tool with a bit of a learning curve. Once you learn it, it becomes a breeze to jump between dozens of tabs inside multiple windows. For instance, currently I have 167 tabs open (I do A LOOT of research) and I can't tell you how much time the search function has saved me in finding a specific tab in all of that chaos. What used to sometimes take me minutes to find, now takes me 2-5 seconds. Very well done.